Yellow stool and yellow diarreah water with it

I have a scope next week. My GERD is bad. I belch all the time. The center of chest burn every morning and it makes me panic or gives me anxiety. I hope they find what the heck is going on.
Maybe it’s.SIBO
HCL made me worse today so scratch that idea that that was working
I know my gallbladder is only functioning at 15% but doc said if no pain or attacks no need to take out.
Are there questions you can recommend to ask the doctor to look for?
Im going to ask to check h pylori bacteria. Maybe I have a hernia. Im always constipated too. If I take herb lax every other day I feel better with getting all the poop out of me.
This burning in my guts has gone on for years,
I tried omeporzole it didn’t help. So some said maybe low stomach acid instead.
Maybe the burning is causing my bleeding and ulcers in colon? I have UC too
Is the yellow colored stool and yellow diarrhea a sign of bile where is it coming from
Thanks for you feed back and help